Todd CaldwellDr. Caldwell's research focuses on field investigations and modeling of soil and vadose zone processes across multiple scales and environments. He is principle investigator for the Texas Soil Observation Network, a core calibration and validation site for the NASA Soil Moisture Active Passive Satellite Mission.

Katherine D RomanakGeochemistry and isotope systematics of carbon cycling in the vadose zone and in freshwater aquifers; soil-gas monitoring and surface gas flux measurements at CO2 sequestration sites; microbial influences on carbon geochemistry in the shallow subsurface; fate and transport of organic contaminants.

Bridget R ScanlonEvaluation of the impact of climate variability and land use change on groundwater recharge, application of numerical models for simulating variably saturated flow and transport, controls on nitrate contamination in aquifers

Michael H YoungEcohydrology of arid and semiarid landscapes; groundwater recharge in both managed agriculture and natural (arid and semi-arid) systems; influence of soil structure and vegetation on water cycling; design and implementation of monitoring systems for above-ground and near-surface below ground environments.